Hi,

I have a Beta Techno with a few problems.. 1. The clutch drags all the time (worse when cold), and even when warm it still drags enough to stop you from rolling the bike back if ya get into a fix. Also from 1st to 3rd its fine but after that it slips has any one any ideas dont want to get new clutch if its something else. Problem 2. It started running really bad a week after i bought it.. fouling up plug, and missfiring so got stator rewound, ran great but its still fouling up the plug after about an hour so have to kept cleaning it. Dont know if its timed up right or not just set it to were it came off, so how or were should it be set or is it something else i should be looking at.

Any help would be great ladys and gents

Cheers, Andy

Gday Andy,

1. Change your gear oil to ATF (Automatic Transmission Fluid). Use Dexron 3. That will help the clutch but they still do it a bit. Mine sometimes sticks on the first start of the day but that's it. Perfect afterwards. Check also that you have some small amount of clearance between the piston in the master cylinder to pushrod from the lever. This is vital. Then recheck that the rest of the adjustment is OK for you (move the lever in or out until you are happy). The main thing is that the piston returns fully out from the m/cyl "at rest".

2. Fouled spark plugs are never a stator problem. Stator problems cause NO SPARK. Timing problems cause poor power or pinging and engine destruction. Never plug fouling, apart from with aluminium from the piston... (Check your timing as per your other post anyway). If your plug is fouling ( I assume it comes out black and oily looking) it is one of these things -

A. Check you have the correct plug - Champion N7YCC , NGK BP7ES (This is what I use and is the correct replacement for the champion) It may pay to start with a new one anyway - they very rarely fail, (once for me in 30 years of doing this for a living) but it can happen. Check the gap 0.6mm and Lube the threads lightly with an Anti-seize grease.

B.Check the oil/fuel mix you use (this can and will affect fuel mixture), it should be 1.5% full synthetic 2-stroke oil (70:1 ) Best off mixing up a fresh batch and replacing what is in it now.

C. Check and clean your air filter and re-oil it. Make sure any excess oil is removed from the filter.

Start the bike up (is it easy to start?) and see how it goes. If it fouls again, you can clean your plug off with Carb/throttle body cleaner and refit. Check the carb now, remove it and carefully check for cleanliness and "adjustment". Needle in the middle groove, and (I think) 150 main, 30 pilot. Check the float level, the tangs should be parallel to the base of the carb when lightly seated against the needle and seat. Idle air screw 1.5 turns out from lightly seated. Stick it back an and try again, you should be OK. It will also pay to clean the exhaust front to rear, there are many threads on this in the forums, have a look and you will find what you need to know.

Good luck,

Cheers,

Stork

I have replaced to plug the other day after i fitted stator, carb been cleaned and i have moved needle to middle now. I been using 90:1 mix with me not knowing what the right mix was so thats prob the prob with the plug fouling. How do i adjust the clutch from behined the clutch casing or the side were it gets blead and pipe goes into the box.

Thanks for ya help up to now stork

cheers mate andy

Edited May 10, 200917 yr by halgaruk

Gday Andy, all your clutch adjustments are at the clutch lever. There is one which moves the lever in and out and one for the free travel part of the adjustment. 90:1 is a leaner oil mix (less oil = more fuel) so that could be the issue for you. My bike (270) runs beautifully with a clean pipe and all standard settings - the plug is literally a coffee colour - couldn't get better if I tried! Where was the needle before you reset it?

Cheers,

Stork

Hi Stork,

The needle was set at the top. I have drained the tank, put 70:1 mix in . I was out yesterday and the bike ran great with new stator and the right mix but the plug still fouled up after about 2 hours had to take plug out and clean it fired straight back up and was fine after that but didnt ride it for much longer so dont know weather it will do it again. Only thing that i can think is timing but dont know were to start with that so any more help would be great. Or i forgot clutch has gone now aswell they say it comes in three's lol

thanks Andy

Edited May 12, 200917 yr by halgaruk